Carding machine



Sept. 14, 1926. 1,600,200.,

E. FIEVET some momma File Q d Oct. 16. 1925 recuperating cylinder) wasnot Patented Sept. 14, 1926. i 1

PATENT. OFFICE.

EUGENE EIEvEr, oE LILLE, FRANCE.

CARDING MACHINE.

Application filed October 16, 1925, Serial No. 62,741, and in FranceNovember 21, 1924.

This invention relates to carding machines and more particularly .tocards for treating the tow of flax, hemp, jute and the like. Theinvention relates to improvements in a recuperating device which isapplicable to the said cards.

The recuperating device above referred to consists, broadly, in achannel formed by means of the cooperation or association of inclinedboards or plates of sheet iron which may be fixed or oscillating. Thewaste from the carding rollers falls upon the said plates which carry itto grating or separators which are oscillated or shaken so as to expelthe straws, dust and the like from the waste, leaving the textile fibresupon a shell or receptacle from which they are recovered by arecuperating cylinder provided with spikes or pins. This recuperatingcylinder transfers the fibres to one of the lower strippers of the card,below which the said recuperator is arranged, so that the said fibreswill be restored to the drum of the card.

As the result of numerous experiments in which the different members andarrangements put forward in the many dlfferent forms of constructiondescribed in the above mentioned patent and its patent of addition, havebeen tried, the recuperating apparatus which resulted and which wasadopted comprised finally only the outer boards or plates therecuperating cylinder and the separators with the shell formed in onepiece.

However, the results obtained by the use of this recuperator have nevergiven complete satisfaction in view of the fact that the thread uponissuing from the card frequently possessed faults which were detrimentalto the subsequent spinning and preparing operations. 7 V

A study of the causes of the irregularities or faults in the spun yarnsoccurring from cards provided with this recuperating arrangement, hasled to the discovery first of all that this fault arose from frequentbreaks or cuts in the web of recuperated fibres, which were spread overthe web normally covering the large carding drum and fura ther thatthese frequently occurring breaks in the recuperated web arose from anirregularity in the supply, to the recuperating cylinder, of fibres andwaste falling from the card upon the outer plates, the inclination ofwhich (dependent upon the position of the separators and the shellsupplying @Glil not be suflicient to ensure alone the continuous slidingof the substances over the whole length of the surface of the saidboards.

In order to overcome this disadvantage, the said boards were constantlyshaken mechanically by any means, such, for example by subjecting themto the shocks imparted to the separator of the shell supplying therecuperating cylinder. These mechanical agitating means were frequentlyfaulty, and the fibres and wasteno longer slipped continuously over thelength of the boards, but accumulated in irregular masses upon theboards and then slid down suddenly, in more or less compact and largemasses, towards the separator and fed the recuperator'irregularly.

For the same purpose, in order to enable' the fibresand the Waste toslide regularly along the outer boards and to thus render the supplyconstant, the sliding surfaces of the latter were deeply curved inwards,this result being no more satisfactory as the fibres accumulated just asmuch at the base of the curve of the boards.

Still with the same object in view, this invention relates toimprovements in this type of recuperator, by virtue of which a regularsupply of fibres to the recuperating cylinder is obtained, the resultbeing that a web of fibres is recuperated without breaks and the spunyarn obtained afterwards is regular and even.

The improvements consist essentially, in giving the boards or plates asgreat an inclination as possible. which inclination moreover must beabout the same for each board, while allowing them to feed theseparatorshell of the recuperating cylinder directly, the said boardshaving a plane sliding sur face.

This effect is obtained by increasing the distance between the drum andthe lower ends of the said boards as much as possible, the boards beingarranged so as to still feed the separator-shell directly, the fibresbeing recuperated by the recuperating cylinder placed above theseparator-shelland in the vertical plane passing through the axis of Vthe large carding drum, and transferred to the stripper by means of anintermediate cylinder placed between the said recuperating cylinder andthe stripper.

The im rovements which form the sub-- jest of this invention, and whichthe recuperating arrangement, are illustrated diagrammatically, by wayof example, in the accompanying drawing, in which Figure 1 is a sideelevation of the lower part of a card of any type, but in which astripper at the bottom of the card passes in proxin'ri'ty to thevertical plane through the axis of the large drum, and to which card theiniproved recuperating arrangement is fitted;

Figure 2 is a similar view of a card, in which none of the strippers atthe bottom of the card pass in proximity the vertical plane through theaxis of the large drum and to which card the improved recuperatingarrangement is also fitted.

Figure 3 shows a diagrammatic layout of a fibre recuperating device, toclearly illustrate the novel purpose, function and ad vantages of myimp'roven'ie'nts in Figs, 1 and 2;

In the figures, referring to the first application of my invention, 1 isthe large eardin'g drum, 2 one of the lower strippers which is inproximity to the vertical plane passing through the axis of the saidlarge cylinder 1; 3 are the boards or plates placed direct 1y above theends of the separator-shell 4 which they feed, and 5 is the recuperatingcylinder placed in the vertical plane passing through the axis of thelarge-drum 1, above the separator-shell 4, from which re cu'peratingcylinder 5 raises the fibres in order to transfer them, through theintermediary of a roller 6, to the stripper 2.

It will be understood that the fibres falling from the card will besupplied to the recuperating cylinder regularly and withoutinterruption, due to the very steep inclination given to the boards. Onthe other hand, in the earlier stages of the invention before theintroduction of the improvements to which this application relates, thein clination of the boards was less (as shown in Fig. due to the factthat the arrange ment comprised the recuperating cylinder alone, andthat the separator-shell, the ends of which had to meet the ends of theboards, was as a consequence, nearer the large drum,

from which it will be understood, by com parison with the improvedarrangement,

that with the boards at this smaller angle of inclination, the fibresfalling from the card could not be fed regularly and withoutinterruption to the recuperating cylinder.

Referring to the second application of the invention -(Fig. 2), in whicharrangement the lower stripper 2 does not pass in proximity to thevertical plane through the of the large drum the arrangement remains thesame and conforms to the invention, in spite of the modified position ofthe said stripper 2, in this sense, that the boards 3 have a steepinclination, that the recuperatin'g cylinder 5, through the intermediaryot the cylinder 6, may be placed somewhere near the vertical. planepassing through the axis of the large drum, which enables the centre ofthe separator-shell to be kept in proximity to the same said verticalcentral plane through the large drum and consequently the hearts 3 to begiven approxi mately the same slope as each other.

By comparison it is easily understood that before the introduction ofthe improvements to which this application relates, the application ofthe recuperator to cards of this second type (thatis to say with abott-o-i'n stripper, at a distance from the vertical plane passingthrough the axis of the large drum) was defective, if not impossible.This was due to the fact that the recuperating cylinder being ofnecessity in a position removed from the vertical plane passing throughthe axis of the large drum, it followed that the separator-shell itselfwas also at a distance from this axis and that consequently if one ofthe boards feeding it was arranged at an'inclination which was almostsufiicient to ensure an approximately suitable :te'ed ofthe waste, onthe other hand, the opposite board had an entirely inoperativeinclination (Fig. 3), this single fault justifying the non-applicationof the re cuperator cards of the second type above mentioned.

It is understood that modifications, alterations and improvements in thearrangement and in the members may be made wit-hout going outside thescope of the invention.

Vfhat I claim is 1. A recuperating device for cards, including boardsfor guiding the fall of waste fibres, characterized by the featurethat'the said boards are inclined at an angle which more nearlyapproaches the vertical, both boards having approximately the sameinclination, the said boards having a plane sliding surfaceand the lowerends of the said boards leading on to the separator-shell of therecuperating cylinder, so as to feed the carding waste directly on tothe latter.

2. The improved recuperating apparatus as claimed in claim 1, possessingthe advantage that it may be applied to all types of cards, andcharacterized by the feature that whatever he the position of the bottomstripper of the card to which the recuperated fibres have to betransferred by the recuperator, the latter is arranged in such a mannerthat it is always adjacent the vertical plane passing through the axisof the carding drum, as also is the centre or approximate the centre ofthe separator-shell the edges of which meet the lower ends ofthe boardswhich feed it directly, the inclination of each of the boards beingapproximately the same, this inclination being made. as near to thevertical as possible by lowering the recuperating cylinder anditsseparator-shell and by transferring the fibres recuperated by the saidcylinder to the stripper through an intermediate cylinder placed betweenthe said recuperating cylinder and the stripper.

3. A recuperating device for cards in spinning, including platesarranged on slopes below and on either side of a carding r011, saidplates being disposed approximately symmetrically on either side of avertical line through the axis of the carding roll, a separator shell, arecuperating cylinder for pick ing fibres therefrom, a lower stripperfor the carding drum and a roller intermediate the recuperating cylinderand the lower stripper.

4. The recuperating device as in claim 3,

said intermediate roller being at one side of the vertical plane of theaxis of the carding drum.

5. The recuperating device as in claim 3 with the stripper roll disposedat one side of the vertical plane of the axis of the carding drum.

In testimony whereof I affix my signature.

' EUGENE FIEVET.

